3 Size 450 900*500mm, 350*280mm RV Caravan Camper Van Hinged Push Out 450 900*500mm 350*280mm RV Caravan Camper Van Hinged Push Out Window 3 ALSUP Camper Windows Vent,Motorhome Window Zip Hinged Window External RV Caravan Hinged Push Out Window Hatch Vent Skylight 450*500mm w Blind 450 900*500mm 350*280mm RV Caravan Camper Van Hinged Push Out Window 3. The Single Hopper Wind Out Window features a tinted acrylic panel and aluminium frame available in white or black. Features: Aluminium frame available in a white or black finish Square corners at the top and curved corners at the bottom Frame includes mounting profile for the Aussie Traveller Protector Shade Tinted acrylic panel in curved style Fixed midge proof flyscreen Includes a buffer strip in the same colour as the frame to hide installation screws Suitable for wall panels 24. 5mm to 50mm Bottom corner radius is 68mm